Abstract: A parison for blow molding is applied to a core rod by successive injection operations in different injection molds. The material for the first layer is injected into the end of the mold cavity remote from the neck portion of the core rod, in the usual manner. The second layer is injected into the second injection mold cavity adjacent to the neck of the core rod to flow over the first layer in a direction from the cooler part of the first layer toward the hotter part. The twolayer parison is then transferred to a blowing mold where it is blown in the usual way.

Abstract: Apparatus for and method of making products, such as pastry cups, ice cream cones and the like, by baking batter in split molds carried by mold bars, the molds cooperating with removable cores carried by core bars selectively latched to the mold bars. The mold bars are mounted on a continuously operating conveyor by which they are progressively carried through an oven, a core bar removing station, a mold opening and product removing station, mold closing and mold charging stations, a core bar replacement station, a core bar jogging station, and a core bar latching station. When the core bars with their cores are removed from the mold bars, they are temporarily stored on and carried by the conveyor.

Abstract: Methods and an apparatus for filling doughnuts or like edible products with a filling in which the product is extruded over and through a hollow, annular filling nozzle such that the product material flows closely past radially, outwardly directed discharge openings in the filling nozzle. The product material forms a solid annular ring where it is rejoined, and filling material is injected into the ring by applying positive pressure to the filling material in the filling nozzle. The filling flow is stopped by applying negative pressure from within the filling nozzle to draw the filling material back from the discharge openings of the nozzle. The negative pressure allows the product material to move toward the discharge openings, sealing the openings.

Abstract: An apparatus for use as an extruder die is disclosed. The die comprises a cylindrical housing surrounded by heating means. Within the die is provided gas injection means which can be used to expand the hot extrudate.

Abstract: In a pressure moulding machine, particularly a die casting machine, detection of locking together of the die parts by the applied pressure is effected by detecting the resulting mechanical stretch in the machine frame; the die parts are opened and closed together by an air motor associated with a hydraulic motor that damps the opening and closing movement of the dies, the die parts being locked together by the hydraulic motor; full closing of the die parts is determined by applying pressurized air to bores therein and to a controlling pressure switch, the pressure switch not being operable if air is leaking from the bores.

Abstract: A blow mandrel for the production of hollow bodies in a hollow blow mold, particular for the production of filled bottles sealed ready for shipment, from a length of tubing of a thermoplastic resin, having an axially displaceable blow pipe adapted to be surrounded by an edge of the mold opening. The blow mandrel comprises the aforementioned blow pipe and, at its mouth section, a sealing ring protruding outwardly beyond the circumferential surface of the blow pipe and extending in closed form in the circumferential direction of the pipe upon blowing in the region of the edge of the opening of the blow mold. The sealing ring has, on its side turned toward the mold cavity, an annular groove open in the direction of the blow-mold cavity.

Abstract: An apparatus for forming rings which are made from a formable food mass, made, for example, from onion pieces and a binder. The apparatus includes a hopper for containing the food mass. A rotating cylindrical member is horizontally mounted within the hopper and annular openings are preferably provided in the outer periphery of the cylindrical member for receiving the food mass at a first position. A ring is reciprocally mounted within each of the annular openings, the rings being reciprocated between the loading position and a discharge position, at which the rings are moved towards and beyond the periphery of the cylindrical member. To separate the formed rings from the cylindrical member, a moving cutter is provided near the discharge position.

Abstract: A reciprocating screw injection molding machine characterized in that the screw is actuated by coaxial hydraulic rotary and linear motors, and in that a movable mold supporting platen has a clamping piston thereon which is reciprocable in a clamping cylinder, the latter having mounted thereon platen and valve actuating cylinders which are operatively secured to the clamping piston and to a valve member respectively to effect movement of the clamping piston and movable mold supporting platen toward and away from a fixed mold supporting platen and to open the valve member for flow of oil from a prefill tank into the clamping cylinder chamber and vice versa, said valve actuating cylinder further being operative upon closing of the mold to close the valve and to admit fluid under pressure into the clamping cylinder chamber to pressurize the trapped fluid therein to lock the clamping piston and movable mold supporting platen in mold closing position with required tonnage for injection of plasticized material into

Abstract: An apparatus for making a fabricless surface covering from particles of synthetic resin utilizes an oven assembly having a plurality of heating units which are automatically and/or manually adjustable for establishing and maintaining a preselected across the several successive heating zones progressively increasing temperature within the oven assembly. The particles of synthetic resin are deposited from a hopper onto a conveyer means which transports them through a leveler assembly and a compactor before reaching the oven assembly. After being fused by the application thereto of heat as it passes through an oven assembly, the synthetic resin is fed through an embossing unit, around a cooling drum and to a trimmer. Then after being trimmed, the fused synthetic resin passes through a coater assembly which applies a coating to a fused resin before the latter leaves the apparatus.

Abstract: Plastics material is injected into a single cavity mold through a sprue bushing which has a cylindrical base portion with a semispherical seat within one end for receiving the nozzle of an injection molding machine. A cylindrical nose portion of smaller diameter, projects from the base portion and includes a flat end or tip surface which is adapted to be positioned flush with the cavity and has a discharge orifice connecting with an axially extending cylindrical chamber within the body. A valve member is supported for axial movement within the chamber and has a cylindrical tip portion which normally closes the discharge orifice under the bias of a series of spring washers confined within the chamber adjacent the opposite end of the valve member. The plastics material is directed from the nozzle seat to the chamber through a plurality of passages which extend around the spring washers.

Abstract: Apparatus for moulding confectionery, comprising a series of moulds, each of which is divided into a fixed half and a hinged half which is normally aligned with the fixed half, a conveyor for traversing the moulds in sequence past a filling station, through a cooling zone to a discharge station and back to the filling station, a depositor at the filling station which is arranged to deposit different materials into moulding cavities in each half of each mould, mechanism disposed at a folding station beyond the cooling zone for folding the hinged half of each mould about its hinge against the fixed half and effecting deposition of the contents of the moulding cavities thereof into the moulding cavities of the fixed half, mechanism disposed at a following unfolding station for returning the folded hinged half of each mould into alignment with its fixed half, and means for inverting the moulds prior to arrival at the discharge station and turning them right way up during their return to the filling station.

Abstract: A plurality of compressible chambers dispense measured amounts of dough through one or more nozzles suspended universally from the bottom of each chamber for swivel movement relative thereto. The nozzles are interconnected by a plate movable in a plane to jointly rotate the nozzles simultaneously in a circuitous manner as the dough is dispensed to provide a predetermined swirl design of the dough as it is dispensed on the moving conveyor. The plate includes openings through which the nozzles extend and are universally connected. The movement of the plate is responsive to a rotating cam which eccentrically drives a follower on the plate to dictate the preselected swirl design.

Abstract: A machine is provided for practicing the method of forming a comestible in one of a variety of shapes from a foodstuff slurry. The slurry includes a gel-forming material and is supplied in predetermined amounts to a cavity which has been washed with a combination release and gellation agent. Apparatus is provided for contacting the exposed surface of the slurry in the cavity with a gellation agent to gel the gelforming material at the outer surface of the formed product. Further apparatus is provided for transporting the cavity filled with the foodstuff to a product removal station. Punch apparatus is aligned with the cavity at the product removal station and is actuated to extend into and extrude the product from the cavity onto a conveyor belt to be removed for further processing.

Abstract: The present invention pertains to an automatic and continuous dough processing apparatus for embossing designs into wads of dough formed in predetermined masses. The apparatus includes an endless belt for receiving the dough masses and transporting them toward a rotary embossing wheel for imparting designs to the dough masses. The processing apparatus further includes a rotary brush which has its periphery simultaneously in contact with the embossing wheel and the upper surface of the dough masses. The brush is adapted to clean the embossing wheel and coat the dough surface with liquid supplied from a reservoir positioned thereabove. The apparatus also includes a mobile frame for housing all of the above-mentioned members and an electrical power drive member which is operatively coupled to the endless belt, the embossing wheel and the rotary brush.

Abstract: A multi-orifice injector nozzle in which a main channel is bifurcated into two slanting intermediate channels which are again bifurcated, the resulting outer branches leading to outer nozzle inserts, while the inner branches are joined above a central nozzle insert. All channels are obtained as smoothly curved congruent grooves milled into the clamping faces of a split injector head.

Abstract: Apparatus is disclosed herein for blow forming a double-walled container or body using either injection or extrusion molding techniques. A mold is provided having a movable sleeve which separates and defines a pair of coaxial wall cavities in parallel relation for receiving a parison during injection molding. A mold is further provided for movably positioning its halves about a pair of coaxial cylindrical parisons so as to close the opposite ends of a predetermined length, this latter procedure being an extrusion molding technique.

Abstract: A pellet mill for making food pellets from a flour product comprising a vertically arranged driven annular rotary die having radial die openings and a number of extrusion rollers inside this annular die and cooperating with the inner cylindrical wall of the die, which rollers are mounted for rotation in a common roller frame carried by a shaft which is held stationary by shear pins under normal operating conditions. The roller frame supports a number of feed tubes, one for each extrusion roller, which tubes each extend axially through the interior of the annular die between the rollers and near the inner die surface and the flour product is fed to these tubes by screw conveyors adjoining the open ends of the feed tubes with minimum clearance, the other, inner ends of the tubes being closed.

Abstract: An apparatus for manufacturing waved noodles comprises a pair of oppositely rotating rollers, each roller having a surface formed with a plurality of spaced grooves, the transversely spaced grooves extending circumferentially around the roller, and the peripheral portions of the rollers between at least two adjacent of the grooves constituting lips. At least one of the lips on at least one roller has a face set back from the other roller and defining a linking space between the adjacent grooves. The grooves are radially wider (i.e. of greater cross section) than the linking space, and there is a means for passing a sheet of dough between the rollers whereby the dough is pressed into the grooves and linkage space, thereby forming a waved noodle having at least two generally parallel bulky portions connected by at least one transversely extending linking portion.

Abstract: An expandable poincon assembly to be used for forming a headpiece onto a preformed thin-walled plastic or laminate tube or bag provides a poincon upon which the loose fitting preformed thin-walled tube can be loaded. After tube loading, the poincon is inserted into a female forming member. Toward the end of the poincon's insertion stroke, a soupape which is mounted for axially movement within the head end of the poincon contacts the female forming member and then partially retracts into the head end of the poincon as the poincon continues to advance to the end of its insertion stroke. A conically-shaped washer mounted on the bottom end of the soupape is peripherally expanded by the continued advancement of the poincon after the top end of the soupape has contacted the female forming member.

Abstract: This invention decreases the time of an injection molding machine cycle by cutting off communication between the mold and the source of material as soon as injection is complete, and accumulating material for the next charge during the cooling part of the cycle. Pressure is maintained on the material in the mold, and material is supplied to compensate cooling shrinkage, from an auxiliary cylinder in which a minor amount of hot material is accumulated. After sufficient cooling, runner material is drawn back by suction of the auxiliary cylinder. A three-way valve cuts off the main material supply and puts the auxiliary cylinder in communication with the mold.